Cervélo makes two of the most respected road race bikes in the WorldTour peloton. The S5 and the R5 occupy different positions in the lineup — one built for speed on flat roads, one built for performance in the mountains — and choosing between them comes down to a clear set of questions about how and where you ride.
Both frames have won at the highest level of professional road racing. Visma–Lease a Bike, the team of Jonas Vingegaard, races on Cervélo and uses both platforms across the season. Here is a full breakdown of what separates them.
The Cervélo S5: Built for Speed
The S5 is Cervélo's dedicated aero road bike. Its tube profiles are deep and truncated, shaped to minimise aerodynamic drag at the speeds typical of flat and rolling WorldTour stages. The frame is stiffer overall than the R5, particularly at the bottom bracket and headtube, to maximise power transfer during high-speed efforts and sprint finishes.
The S5 comes with a fully integrated cockpit — bar, stem, and cables routed internally — which eliminates drag at the front end and gives the bike its distinctive clean appearance. This integration also means fit adjustments are more involved than on a conventional setup, and riders who need significant positional changes should factor that into the buying decision.
On flat terrain and in crosswinds, the S5 returns a meaningful aerodynamic advantage over a standard all-round frame. Independent tunnel testing has consistently placed it among the most aerodynamically efficient production road bikes available. At gradients below 4 to 5 percent, the speed gains from the S5's aero profile outweigh the weight penalty over the R5.
Who it is for: riders who primarily race or ride on flat and rolling terrain, sportives with limited climbing, criteriums, or anyone whose routes keep them at high speeds for extended periods.
The Cervélo R5: Built for the Mountains
The R5 is Cervélo's lightweight climbing platform and one of the most respected frames in its category. It uses a lighter carbon layup than the S5, conventional round tube profiles, and a geometry that prioritises stiffness-to-weight over aerodynamic efficiency. The frameset weight sits well below 900 g in the sizes Cervélo publishes, and the complete build can reach the UCI 6.8 kg minimum with Dura-Ace Di2 or SRAM Red AXS and a set of lightweight wheels.
The R5 is the frame Vingegaard rides on summit finishes — stages where the gradient removes any aerodynamic advantage and every gram counts. On climbs above 5 to 6 percent gradient sustained over multiple kilometres, the R5's weight advantage translates directly into faster times. The handling is neutral and precise, which makes it equally effective on technical descents that follow long climbs.
The R5 does not use a fully integrated cockpit by default — it is available with conventional stems and bars, which makes positional adjustment more accessible than the S5. For riders who want a climbing-focused race bike without committing to an integrated front end, this is a practical advantage.
Who it is for: riders whose routes include significant climbing, Gran Fondo participants targeting mountain events, riders focused on performance on steep or long gradients, and anyone buying a WorldTour-level frame primarily for mountain riding.
Where They Overlap
For most recreational and sportive riders, the performance difference between the S5 and R5 on typical mixed-terrain routes is smaller than the spec sheets suggest. Both frames are stiff, efficient, and capable of sub-6.8 kg builds with the right components. The difference becomes measurable in conditions that consistently favour one platform — long flat roads at speed for the S5, sustained alpine gradients for the R5.
If your riding is genuinely mixed — rolling terrain with moderate climbs and no dominant characteristic — the R5 is typically the more versatile choice. Its lighter weight provides a consistent baseline advantage across all terrain, while the S5's aero gains are most pronounced in specific conditions that may not define your usual routes.
Pricing and Availability at Bikeroom
Bikeroom currently stocks multiple Cervélo R5 builds across the 2024 and 2026 model years, with configurations ranging from Shimano Ultegra Di2 to SRAM Red AXS E1 and Campagnolo Super Record Wireless. Prices range from €5,499 to €10,499 depending on the groupset and wheel build. The R5 2026 with SRAM Red AXS E1 and Reserve 34TA/37TA wheels is the current flagship configuration on the marketplace.
S5 inventory moves quickly given its WorldTour profile and the Vingegaard association. Both models appear on the secondary market after professional team programmes and are verified by Bikeroom before listing.
